Power Supply for Kurzweil PC88 Keyboard

External AC-output transformer, not a DC adapter

Verified November 2026

Cheaper aftermarket part

9.5V AC adapter for Kurzweil PC88

AC output, not DC: 9.5V AC, 2A. Pin count not confirmed

The PC88 needs AC output, and third-party AC units are sold by the PP95-20 number.

Check first: Check the label says AC output and match the plug to your old adapter. Never use a DC adapter.

Exact part

PP95-20

Other parts listed for this model: 638020102

The usual mistake

Using a 9 V DC adapter from a pedal or keyboard; this supply puts out AC and the keyboard rectifies it inside.